Denver International to Ontario International DEN → ONT
710 nautical miles (818 statute miles) southwest on a straight line, true course 245°, about 237° magnetic at the departure end (variation 8E). At 120 knots that is 7 h 33 min at the quickest height in today's winds (8,500 ft, a 26-knot headwind), arriving about 1:55 am PDT (08:55 UTC), after sunset at the destination. Right now DEN is VFR, wind from the south (170°) at 13 knots; ONT is VFR, wind from the west-southwest (240°) at 8 knots. For planning, not a briefing: the legal preflight briefing comes from Flight Service (1-800-WX-BRIEF) or the FAA's own tools. Airlines fly this pair: 6,530 flights in the DOT's last twelve reported months, the route's page.
The route the straight line, the warnings crossed, restrictions, pilot reports and the airports along the way · click a mark for its words
Green, blue, red and purple airport dots are the flying conditions reported there now (VFR, marginal VFR, IFR, low IFR); grey means no report. Red areas are SIGMETs, orange areas AIRMETs, hatched red areas temporary flight restrictions. Map tiles: OpenFreeMap, data © OpenStreetMap contributors.
Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 651 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 572 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 79 to 572 nm out.
- AIRMET TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the route from 99 to 286 nm out.
- AIRMET TANGO 3W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 237 to 286 nm out.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 296 to 651 nm out.
- AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 405 to 483 nm out.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the last 128 nm of the route.
- AIRMET SIERRA 6E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 30 nm of the route.
A SIGMET warns of weather hazardous to all aircraft; an AIRMET of weather that matters to small aircraft and to flying without instruments. "From 60 to 180 nm out" is measured along the route from DEN.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- A21N at 32,000 ft, 46 nm northeast, 5:42 pm MDT (23:42 UTC): moderate chop turbulence, remarks: ZDVWC-61. At the departure end, 46 nm northeast of the line.
as filed, and in English
AKO UA /OV AKO270030/TM 2342/FL320/TP A21N/TB INTMT MOD CHOP/RM ZDVWC-61
- Report
- a routine report filed through AKO
- Where
- 30 nm west (270°) of AKO
- Time
- 23:42 UTC
- Height
- at 32,000 ft
- Aircraft
- A21N
- Turbulence
- intermittent moderate chop
- Remarks
- ZDVWC-61
- BCS3 at 24,000 ft, 42 nm north, 5:28 pm MDT (23:28 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the descent. At the departure end, 42 nm north of the line.
as filed, and in English
DEN UA /OV DEN320045/TM 2328/FL240/TP BCS3/TB MOD 240-220/RM DURD
- Report
- a routine report filed through DEN
- Where
- 45 nm northwest (320°) of DEN
- Time
- 23:28 UTC
- Height
- at 24,000 ft
- Aircraft
- BCS3
- Turbulence
- moderate from 24,000 ft to 22,000 ft
- Remarks
- during the descent
- GLF5 at 45,000 ft, 34 nm southeast, 4:44 pm MDT (22:44 UTC): moderate turbulence, remarks: ZDVWC-46. At the departure end, 34 nm southeast of the line.
as filed, and in English
COS UA /OV COS350025/TM 2244/FL450/TP GLF5/TB MOD /RM ZDVWC-46
- Report
- a routine report filed through COS
- Where
- 25 nm north (350°) of COS
- Time
- 22:44 UTC
- Height
- at 45,000 ft
- Aircraft
- GLF5
- Turbulence
- moderate
- Remarks
- ZDVWC-46
- C650 at 40,000 ft, 23 nm northwest, 5:48 pm MDT (23:48 UTC): moderate turbulence, remarks: ZDVWC-03. 99 nm along the route, 23 nm northwest of the line.
as filed, and in English
ASE UA /OV DBL/TM 2348/FL400/TP C650/TB MOD /RM ZDVWC-03
- Report
- a routine report filed through ASE
- Where
- over DBL
- Time
- 23:48 UTC
- Height
- at 40,000 ft
- Aircraft
- C650
- Turbulence
- moderate
- Remarks
- ZDVWC-03
- C680A at 16,000 ft, 10 nm northwest, 4:59 pm MDT (22:59 UTC): moderate turbulence, scattered clouds above 16,000 ft, remarks: during the descent. 109 nm along the route, 10 nm northwest of the line.
as filed, and in English
ASE UA /OV HAERI/TM 2259/FL160/TP C680A/SK SCT160/TB CONS MOD/RM DURD
- Report
- a routine report filed through ASE
- Where
- haeri
- Time
- 22:59 UTC
- Height
- at 16,000 ft
- Aircraft
- C680A
- Sky
- scattered clouds from 16,000 ft
- Turbulence
- continuous moderate
- Remarks
- during the descent
- C680 at 18,000 ft, 9 nm northwest, 4:35 pm MDT (22:35 UTC): moderate turbulence, remarks: from 18,000 ft to 10,000 ft. 128 nm along the route, 9 nm northwest of the line.
as filed, and in English
ASE UA /OV ASE230020/TM 2235/FL180/TP C680/TB MOD/RM 180-100
- Report
- a routine report filed through ASE
- Where
- 20 nm southwest (230°) of ASE
- Time
- 22:35 UTC
- Height
- at 18,000 ft
- Aircraft
- C680
- Turbulence
- moderate
- Remarks
- from 18,000 ft to 10,000 ft
- E170 at 10,000 ft, 31 nm northwest, 5:41 pm MDT (23:41 UTC): moderate turbulence up to 10,000 ft, remarks: during the climb. 178 nm along the route, 31 nm northwest of the line.
as filed, and in English
GJT UA /OV GJT144009/TM 2341/FL100/TP E170/TB MOD SFC-100/RM DURC
- Report
- a routine report filed through GJT
- Where
- 9 nm southeast (144°) of GJT
- Time
- 23:41 UTC
- Height
- at 10,000 ft
- Aircraft
- E170
- Turbulence
- moderate from the surface to 10,000 ft
- Remarks
- during the climb
- UAL493 at 24,000 ft, 34 nm northwest, 4:54 pm MDT (22:54 UTC): moderate turbulence. 454 nm along the route, 34 nm northwest of the line.
as filed, and in English
ARP UAL493 3648N 11330W 2254 F240 TB MODERATE SK IN CLOUDS IC LIGHT
- Report
- a routine report filed through ARP
- B38M at 14,000 ft, 6 nm east, 6:13 pm MDT (00:13 UTC): moderate turbulence, light rime icing, 8 °C. 681 nm along the route, 6 nm east of the line.
as filed, and in English
ONT UA /OV ONT053034/TM 0013/FL140/TP B38M/TA 08/TB MODERATE TURBULENCE/IC LIGHT RIME ICE 190 - 170
- Report
- a routine report filed through ONT
- Where
- 34 nm northeast (053°) of ONT
- Time
- 00:13 UTC
- Height
- at 14,000 ft
- Aircraft
- B38M
- Temperature
- 8 °C
- Turbulence
- moderate turbulence
- Icing
- light rime ice at 19,000 ft at 17,000 ft
- A321 descending, 3 nm south, 6:26 pm MDT (00:26 UTC): no turbulence up to 10,000 ft. At the departure end, 3 nm south of the line.
as filed, and in English
DEN UA /OV DEN/TM 0026/FLDURD/TP A321/TB NEG BLO 100
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 00:26 UTC
- Height
- during the descent
- Aircraft
- A321
- Turbulence
- no below 10,000 ft
- E75L at 10,000 ft, 22 nm north, 5:45 pm MDT (23:45 UTC): light turbulence up to 17,000 ft, remarks: during the climb. At the departure end, 22 nm north of the line.
as filed, and in English
DEN UA /OV DEN350025/TM 2345/FL100/TP E75L/TB LGT SFC-170/RM DURC
- Report
- a routine report filed through DEN
- Where
- 25 nm north (350°) of DEN
- Time
- 23:45 UTC
- Height
- at 10,000 ft
- Aircraft
- E75L
- Turbulence
- light from the surface to 17,000 ft
- Remarks
- during the climb
- A320 at 8,000 ft, 31 nm east, 5:42 pm MDT (23:42 UTC): light chop turbulence from 8,000 ft to 16,000 ft, remarks: during the climb. At the departure end, 31 nm east of the line.
as filed, and in English
DEN UA /OV DEN080030/TM 2342/FL080/TP A320/TB LGT CHOP 080-160/RM DURC
- Report
- a routine report filed through DEN
- Where
- 30 nm east (080°) of DEN
- Time
- 23:42 UTC
- Height
- at 8,000 ft
- Aircraft
- A320
- Turbulence
- light chop from 8,000 ft to 16,000 ft
- Remarks
- during the climb
- B738 at 35,000 ft, 46 nm northeast, 5:30 pm MDT (23:30 UTC): light turbulence, remarks: ZDVWC-07. At the departure end, 46 nm northeast of the line.
as filed, and in English
AKO UA /OV AKO270030/TM 2330/FL350/TP B738/TB CONS LGT /RM ZDVWC-07
- Report
- a routine report filed through AKO
- Where
- 30 nm west (270°) of AKO
- Time
- 23:30 UTC
- Height
- at 35,000 ft
- Aircraft
- B738
- Turbulence
- continuous light
- Remarks
- ZDVWC-07
- B737 at 6,500 ft, 3 nm south, 5:27 pm MDT (23:27 UTC): no turbulence. At the departure end, 3 nm south of the line.
as filed, and in English
DEN UA /OV DEN/TM 2327/FL065/TP B737/TB NEG TB ON FINAL RWY17R
- Report
- a routine report filed through DEN
- Where
- over DEN
- Time
- 23:27 UTC
- Height
- at 6,500 ft
- Aircraft
- B737
- Turbulence
- no turbulence on final runway 17R
16 more routine reports are on the map.
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 UTC · at 120 knots true airspeed
The westbound cruising heights for this course (VFR: even thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 5 forecast points nearest it (DEN, GJT, BCE, LAS, ONT). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 8,500 ft | 210° at 30 kt | +26 kt | 9 °C | 94 kt | 7 h 33 min | 1:55 am PDT (08:55 UTC) |
| 10,500 ft | 220° at 35 kt | +31 kt | 4 °C | 89 kt | 7 h 59 min | 2:21 am PDT (09:21 UTC) |
| 12,500 ft | 220° at 37 kt | +34 kt | 0 °C | 86 kt | 8 h 15 min | 2:37 am PDT (09:37 UTC) |
| 14,500 ft | 220° at 40 kt | +36 kt | -4 °C | 84 kt | 8 h 27 min | 2:49 am PDT (09:49 UTC) |
| 16,500 ft | 210° at 44 kt | +39 kt | -8 °C | 81 kt | 8 h 46 min | 3:08 am PDT (10:08 UTC) |
| 18,000 ft FL180 | 210° at 46 kt | +41 kt | -11 °C | 79 kt | 8 h 59 min | 3:21 am PDT (10:21 UTC) |
| 24,000 ft FL240 | 220° at 49 kt | +45 kt | -22 °C | 75 kt | 9 h 28 min | 3:50 am PDT (10:50 UTC) |
| 30,000 ft FL300 | 220° at 54 kt | +50 kt | -28 °C | 70 kt | 10 h 09 min | 4:31 am PDT (11:31 UTC) |
| 34,000 ft FL340 | 220° at 57 kt | +55 kt | -35 °C | 65 kt | 10 h 55 min | 5:17 am PDT (12:17 UTC) |
| 39,000 ft FL390 | 230° at 59 kt | +58 kt | -45 °C | 62 kt | 11 h 27 min | 5:49 am PDT (12:49 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 UTC; temperatures above 24,000 ft are below zero. Heights are above sea level; a height is left out when the forecast has no wind for it over most of the line (the ground is higher). Ground speed is the airspeed less the headwind; the time en route is for the straight line and ignores climb, descent and routing around weather.
The forecast points as issued
| Point | From | 3,000 | 6,000 | 9,000 | 12,000 | 18,000 | 24,000 | 30,000 | 34,000 | 39,000 |
|---|---|---|---|---|---|---|---|---|---|---|
| DEN | used from 0 nm out; 25 nm from the line | 190/31 16° | 210/32 7° | 240/41 -8° | 230/47 -21° | 240/56 -32° | 250/65 -37° | 250/61 -47° | ||
| GJT | used from 99 nm out; 69 nm from the line | 210/40 11° | 210/46 3° | 210/61 -10° | 210/68 -22° | 220/57 -29° | 230/59 -36° | 240/66 -46° | ||
| BCE | used from 296 nm out; 69 nm from the line | 210/47 0° | 200/50 -12° | 220/31 -23° | 220/56 -26° | 220/58 -35° | 230/58 -45° | |||
| LAS | used from 444 nm out; 84 nm from the line | 200/25 11° | 230/22 5° | 240/25 -1° | 220/37 -12° | 220/44 -21° | 210/52 -27° | 210/60 -34° | 220/58 -44° | |
| ONT | used from 641 nm out; 44 nm from the line | 230/11 | 200/17 6° | 230/27 4° | 230/32 -2° | 210/39 -12° | 220/51 -20° | 220/48 -29° | 210/51 -34° | 210/52 -44° |
The weather now: both ends and the airports along the way public airports with a weather report within 25 nm of the line, one for each stretch
| Airport | Where | Conditions | Wind | Visibility | Ceiling | Elevation | Reported |
|---|---|---|---|---|---|---|---|
| DEN Denver, CO | departure | VFR Sky: a few clouds at 11,000 feet, a few clouds at 14,000 feet, a broken layer at 22,000 feet | from the south (170°) at 13 knots | 10+ mi | 22,000 ft | 5,433 ft | 6:53 pm MDT (00:53 UTC) |
| BJC Denver, CO | 20 nm out, 12 nm north of the line, tower | VFR | from the north (350°) at 5 knots | 10+ mi | none | 5,673 ft | 00:45 UTC |
| ASE Aspen, CO | 109 nm out, 10 nm northwest of the line, tower | VFR Sky: a broken layer at 7,500 feet, overcast at 9,000 feet Weather: light rain | from the west-northwest (300°) at 12 knots, gusting to 15 | 10+ mi | 7,500 ft | 7,837 ft | 00:53 UTC |
| AIB Nucla, CO | 207 nm out, 6 nm southeast of the line | low IFR Sky: scattered clouds at 7,000 feet, a broken layer at 8,500 feet Weather: light drizzle | from the south (180°) at 18 knots, gusting to 22 | 0.5 mi | 8,500 ft | 5,945 ft | 22:15 UTC |
| BDG Blanding, UT | 266 nm out, 21 nm southeast of the line | VFR | from the south-southwest (200°) at 21 knots, gusting to 33 | 10+ mi | none | 5,867 ft | 22:15 UTC |
| PGA Page, AZ | 365 nm out, 9 nm southeast of the line | VFR Sky: a few clouds at 7,000 feet, scattered clouds at 12,000 feet | from the south (190°) at 12 knots, gusting to 20 | 10+ mi | none | 4,316 ft | 00:53 UTC |
| IFP Bullhead City, AZ | 553 nm out, 25 nm southeast of the line, tower | VFR Sky: a broken layer at 7,500 feet, a broken layer at 12,000 feet | from the south (190°) at 9 knots | 10+ mi | 7,500 ft | 707 ft | 01:15 UTC |
| SBD San Bernardino, CA | 691 nm out, 9 nm south of the line, tower | VFR Sky: a broken layer at 3,600 feet, overcast at 5,000 feet | from the south (190°) at 5 knots | 10+ mi | 3,600 ft | 1,159 ft | 00:55 UTC |
| ONT Ontario, CA | destination | VFR Sky: scattered clouds at 4,900 feet, a broken layer at 12,000 feet | from the west-southwest (240°) at 8 knots | 10+ mi | 12,000 ft | 944 ft | 5:53 pm PDT (00:53 UTC) |
The highest airport on this list sits at 7,837 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At ONT when you get there the forecast at the estimated arrival, 1:55 am PDT (08:55 UTC)
Wind from the west-southwest at 8 knots, visibility more than 6 miles, showers nearby, overcast at 2,500 feet marginal VFR
The whole forecast for ONT
- From Sun 5:00 pm PDT (00:00 UTC): wind from the southwest at 11 knots, gusting to 18, visibility more than 6 miles, a few clouds at 3,000 feet, a broken layer at 5,000 feet
- From Sun 11:00 pm PDT (06:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, showers nearby, overcast at 2,500 feet
- From Mon 3:00 am PDT (10:00 UTC): wind from the west-southwest at 4 knots, visibility more than 6 miles, showers nearby, a few clouds at 2,500 feet, a broken layer at 5,000 feet
- From Mon 11:00 am PDT (18:00 UTC): wind from the west-southwest at 5 knots, visibility more than 6 miles, a broken layer at 5,000 feet
- From Mon 2:00 pm PDT (21:00 UTC): wind from the west-southwest at 11 knots, gusting to 18, visibility more than 6 miles, a broken layer at 5,000 feet
- From Mon 8:00 pm PDT (03:00 UTC): wind from the west-southwest at 9 knots, visibility more than 6 miles, a broken layer at 6,000 feet
The forecast for DEN, the departure
- From Sun 7:00 pm MDT (01:00 UTC): wind from the south at 14 knots, gusting to 21, visibility more than 6 miles, a few clouds at 10,000 feet, a few clouds at 14,000 feet and more above
- From Sun 7:00 pm MDT (01:00 UTC): wind from the southwest at 14 knots, gusting to 23, visibility more than 6 miles, a few clouds at 14,000 feet, scattered clouds at 22,000 feet
- From Mon 1:00 am MDT (07:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, a few clouds at 22,000 feet
- From Mon 9:00 am MDT (15:00 UTC): wind from the southwest at 14 knots, gusting to 21, visibility more than 6 miles, clear skies
- From Mon 4:00 pm MDT (22:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, clear skies
- From Mon 7:00 pm MDT (01:00 UTC): wind from the northeast at 8 knots, visibility more than 6 miles, clear skies
Temporary flight restrictions on the line or within 25 nm of it
- 6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local 10 nm from the route, 543 nm along the route · a VIP movement · starts tomorrow · ZLA
- 6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local 15 nm from the route, 553 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
- 4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 19 nm from the route, at the destination end · security · ZLA
Daylight
Sunset at DEN 6:24 pm MDT (00:24 UTC), at ONT 6:20 pm PDT (01:20 UTC) (civil twilight ends 6:45 pm PDT (01:45 UTC)). At 120 knots the arrival at ONT is before sunrise there (6:53 am PDT (13:53 UTC)).
Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (closed runways, lights out) are not shown: the FAA's notice search is not open to sites like this one at this time.
Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads
Sources: the Aviation Weather Center's data service (SIGMETs, AIRMETs, graphical AIRMETs, pilot reports, winds and temperatures aloft, observations and terminal forecasts), the National Weather Service radar, the Weather Prediction Center's charts, the FAA's temporary flight restriction list and shapes, and the FAA's airport file for the positions, elevations and magnetic variation. Fetched when the page is viewed and kept a few minutes. Each leg is the straight line between its two airports; airways, terrain and airspace are not considered. The airports in detail: Denver International, Ontario International.